Home / 21,803.65-32,705.09-12,423.66

Finding the Fourth Proportional to 21,803.65, 32,705.09 and 12,423.66

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Solution

The fourth proportional to 21,803.65, 32,705.09 and 12,423.66 is: 18,635.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,803.65 : 32,705.09 = 12,423.66 : x
  2. Step 2: Convert to fraction form
    21,803.65/32,705.09 = 12,423.66/x
  3. Step 3: Cross multiply
    21,803.65x = 32,705.09 × 12,423.66
  4. Step 4: Simplify right side
    21,803.65x = 406,316,856.31
  5. Step 5: Solve for x
    x = 406,316,856.31/21,803.65
  6. Step 6: Final answer
    x = 18,635.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.